Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

T: Teilchenphysik

T 204: Neue Ph
änomene II

T 204.1: Vortrag

Dienstag, 11. März 2003, 14:00–14:15, SFO3

Tests of Five-Dimensional Extensions of the Standard Model at LEP2 and a Future Linear Collider — •Alexander Mück¹, Apostolos Pilaftsis², and Reinhold Rückl¹ — ¹Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Am Hubland, 97074 Würzburg — ²Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL

In the context of large (TeV-size) extra dimensions, we discuss phenomenological consequences of standard-model extensions with one additional spatial dimension. We carefully distinguish different minimal settings in which, in addition to the matter fields, some of the gauge and the Higgs fields may be confined to a four-dimensional subspace, the usual Minkowski space. We show how compactification leads to effective 4D models which can be confronted with experiment. Using the latest data on precision observables and LEP2 data on fermion-pair, W-pair, and hadron production, we put limits on the compactification scale, i.e. the inverse size of the extra dimension. Finally, we outline how a future linear collider can further test such higher-dimensional theories, using the proposed TESLA specifications as an example.